In my HT set up, I had a 2 channel and a 3 channel amp set up before. I ran of out space on my rack so I sold both and bought a 5 channel amp. I did not realized how much better the 2&3 were vs. the 5 alone. My amps were all from Cary and put out the same 200w/channel, so I guess that should answer your question.
Nick
Nick